We noticed that your "Default Cover Art," as shown in the attached screenshot, is not custom artwork, as recommended. If there are no issues available for your app on a given date, the "Default Cover Art" is used to represent your app on the App Store.

To avoid user confusion, we recommend that your "Default Cover Art" is a reasonable facsimile of the cover of a typical issue. However, it is not appropriate to have the "Default Cover Art" identical to the cover of the published issues or app icons.

does it have to be different from the magazine cover?

we Use the actual magazine cover for the Default cover art, and apple rejected it,, anyone can help with this? thanks....